Manuals This page is dedicated to being a resource tool to the users of desktop phones. We will carry PDFs of user manuals, quick reference guides, and data sheets for Avaya, Cisco, Mitel, Nortel, Polycom, and ShoreTel brand of phones. Avaya Manuals Cisco Manuals Mitel Manuals Nortel Manuals Polycom Manuals ShoreTel Manuals